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Harmony · Side view · Neck

Submental Cervical Angle

The angle where the under-chin contour meets the front of the neck.

What is measured

The calculation

Angle: menton → cervical point → neck point

Side view / Measurement guide

Submental Cervical Angle: side-view measurement illustrationAn original schematic showing A: Under-chin–neck junction. Lines identify the landmarks used; the drawing is not to scale.A

Follow the measurement

AUnder-chin–neck junction

Dots mark the landmarks. Lines show how the measurement is taken.

Schematic illustration, not to scale. Lines show the measurement construction; this is not an ideal face or a scored result.

In these guides, nasion means the nasal root, subnasale the nose base, and pogonion the most forward chin point. Frankfort refers to the direction from the ear-opening landmark to the lower orbital landmark.

Why it matters

It describes the change in direction from the chin underside to the neck. Posture, soft-tissue contour and chin position all affect the visible junction.

  • Lower: a more closed chin–neck junction.
  • Higher: a more open transition into the neck.

Where the idea comes from

Clinical reference

This contour is used in clinical profile assessment. Naini and colleagues studied how groups rated silhouettes with different submental-cervical angles; those ratings do not establish a treatment need for an individual. [1]

A worked example

A 100° junction is geometrically more closed than a 125° junction. Lifting the chin can change the photographed contour.

Example values explain the calculation. They are not a target range and are not measurements of the schematic above.

Research & further reading

The sources below explain the history or related evidence. FaceIQ’s score weights and reference ranges are model settings; these papers do not collectively validate the scoring system.

  1. [1] Naini et al. · 2016

    Submental-Cervical Angle: Perceived Attractiveness and Threshold Values of Desire for Surgery

    Patients, laypeople and clinicians rated altered profile silhouettes. Ratings changed with the neck angle and differed between groups; a silhouette experiment cannot determine an individual treatment need.